1 /* 2 * This file is part of wl1251 3 * 4 * Copyright (C) 2008-2009 Nokia Corporation 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 * 20 */ 21 22 #include <linux/module.h> 23 #include <linux/interrupt.h> 24 #include <linux/firmware.h> 25 #include <linux/delay.h> 26 #include <linux/irq.h> 27 #include <linux/crc32.h> 28 #include <linux/etherdevice.h> 29 #include <linux/vmalloc.h> 30 #include <linux/slab.h> 31 32 #include "wl1251.h" 33 #include "wl12xx_80211.h" 34 #include "reg.h" 35 #include "io.h" 36 #include "cmd.h" 37 #include "event.h" 38 #include "tx.h" 39 #include "rx.h" 40 #include "ps.h" 41 #include "init.h" 42 #include "debugfs.h" 43 #include "boot.h" 44 45 void wl1251_enable_interrupts(struct wl1251 *wl) 46 { 47 wl->if_ops->enable_irq(wl); 48 } 49 50 void wl1251_disable_interrupts(struct wl1251 *wl) 51 { 52 wl->if_ops->disable_irq(wl); 53 } 54 55 static int wl1251_power_off(struct wl1251 *wl) 56 { 57 return wl->if_ops->power(wl, false); 58 } 59 60 static int wl1251_power_on(struct wl1251 *wl) 61 { 62 return wl->if_ops->power(wl, true); 63 } 64 65 static int wl1251_fetch_firmware(struct wl1251 *wl) 66 { 67 const struct firmware *fw; 68 struct device *dev = wiphy_dev(wl->hw->wiphy); 69 int ret; 70 71 ret = request_firmware(&fw, WL1251_FW_NAME, dev); 72 73 if (ret < 0) { 74 wl1251_error("could not get firmware: %d", ret); 75 return ret; 76 } 77 78 if (fw->size % 4) { 79 wl1251_error("firmware size is not multiple of 32 bits: %zu", 80 fw->size); 81 ret = -EILSEQ; 82 goto out; 83 } 84 85 wl->fw_len = fw->size; 86 wl->fw = vmalloc(wl->fw_len); 87 88 if (!wl->fw) { 89 wl1251_error("could not allocate memory for the firmware"); 90 ret = -ENOMEM; 91 goto out; 92 } 93 94 memcpy(wl->fw, fw->data, wl->fw_len); 95 96 ret = 0; 97 98 out: 99 release_firmware(fw); 100 101 return ret; 102 } 103 104 static int wl1251_fetch_nvs(struct wl1251 *wl) 105 { 106 const struct firmware *fw; 107 struct device *dev = wiphy_dev(wl->hw->wiphy); 108 int ret; 109 110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev); 111 112 if (ret < 0) { 113 wl1251_error("could not get nvs file: %d", ret); 114 return ret; 115 } 116 117 if (fw->size % 4) { 118 wl1251_error("nvs size is not multiple of 32 bits: %zu", 119 fw->size); 120 ret = -EILSEQ; 121 goto out; 122 } 123 124 wl->nvs_len = fw->size; 125 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL); 126 127 if (!wl->nvs) { 128 wl1251_error("could not allocate memory for the nvs file"); 129 ret = -ENOMEM; 130 goto out; 131 } 132 133 ret = 0; 134 135 out: 136 release_firmware(fw); 137 138 return ret; 139 } 140 141 static void wl1251_fw_wakeup(struct wl1251 *wl) 142 { 143 u32 elp_reg; 144 145 elp_reg = ELPCTRL_WAKE_UP; 146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); 147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); 148 149 if (!(elp_reg & ELPCTRL_WLAN_READY)) 150 wl1251_warning("WLAN not ready"); 151 } 152 153 static int wl1251_chip_wakeup(struct wl1251 *wl) 154 { 155 int ret; 156 157 ret = wl1251_power_on(wl); 158 if (ret < 0) 159 return ret; 160 161 msleep(WL1251_POWER_ON_SLEEP); 162 wl->if_ops->reset(wl); 163 164 /* We don't need a real memory partition here, because we only want 165 * to use the registers at this point. */ 166 wl1251_set_partition(wl, 167 0x00000000, 168 0x00000000, 169 REGISTERS_BASE, 170 REGISTERS_DOWN_SIZE); 171 172 /* ELP module wake up */ 173 wl1251_fw_wakeup(wl); 174 175 /* whal_FwCtrl_BootSm() */ 176 177 /* 0. read chip id from CHIP_ID */ 178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); 179 180 /* 1. check if chip id is valid */ 181 182 switch (wl->chip_id) { 183 case CHIP_ID_1251_PG12: 184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", 185 wl->chip_id); 186 break; 187 case CHIP_ID_1251_PG11: 188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", 189 wl->chip_id); 190 break; 191 case CHIP_ID_1251_PG10: 192 default: 193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id); 194 ret = -ENODEV; 195 goto out; 196 } 197 198 if (wl->fw == NULL) { 199 ret = wl1251_fetch_firmware(wl); 200 if (ret < 0) 201 goto out; 202 } 203 204 if (wl->nvs == NULL && !wl->use_eeprom) { 205 /* No NVS from netlink, try to get it from the filesystem */ 206 ret = wl1251_fetch_nvs(wl); 207 if (ret < 0) 208 goto out; 209 } 210 211 out: 212 return ret; 213 } 214 215 #define WL1251_IRQ_LOOP_COUNT 10 216 static void wl1251_irq_work(struct work_struct *work) 217 { 218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; 219 struct wl1251 *wl = 220 container_of(work, struct wl1251, irq_work); 221 int ret; 222 223 mutex_lock(&wl->mutex); 224 225 wl1251_debug(DEBUG_IRQ, "IRQ work"); 226 227 if (wl->state == WL1251_STATE_OFF) 228 goto out; 229 230 ret = wl1251_ps_elp_wakeup(wl); 231 if (ret < 0) 232 goto out; 233 234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); 235 236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); 238 239 do { 240 if (wl->data_path) { 241 wl->rx_counter = wl1251_mem_read32( 242 wl, wl->data_path->rx_control_addr); 243 244 /* We handle a frmware bug here */ 245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) { 246 case 0: 247 wl1251_debug(DEBUG_IRQ, 248 "RX: FW and host in sync"); 249 intr &= ~WL1251_ACX_INTR_RX0_DATA; 250 intr &= ~WL1251_ACX_INTR_RX1_DATA; 251 break; 252 case 1: 253 wl1251_debug(DEBUG_IRQ, "RX: FW +1"); 254 intr |= WL1251_ACX_INTR_RX0_DATA; 255 intr &= ~WL1251_ACX_INTR_RX1_DATA; 256 break; 257 case 2: 258 wl1251_debug(DEBUG_IRQ, "RX: FW +2"); 259 intr |= WL1251_ACX_INTR_RX0_DATA; 260 intr |= WL1251_ACX_INTR_RX1_DATA; 261 break; 262 default: 263 wl1251_warning( 264 "RX: FW and host out of sync: %d", 265 wl->rx_counter - wl->rx_handled); 266 break; 267 } 268 269 wl->rx_handled = wl->rx_counter; 270 271 wl1251_debug(DEBUG_IRQ, "RX counter: %d", 272 wl->rx_counter); 273 } 274 275 intr &= wl->intr_mask; 276 277 if (intr == 0) { 278 wl1251_debug(DEBUG_IRQ, "INTR is 0"); 279 goto out_sleep; 280 } 281 282 if (intr & WL1251_ACX_INTR_RX0_DATA) { 283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); 284 wl1251_rx(wl); 285 } 286 287 if (intr & WL1251_ACX_INTR_RX1_DATA) { 288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); 289 wl1251_rx(wl); 290 } 291 292 if (intr & WL1251_ACX_INTR_TX_RESULT) { 293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); 294 wl1251_tx_complete(wl); 295 } 296 297 if (intr & WL1251_ACX_INTR_EVENT_A) { 298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); 299 wl1251_event_handle(wl, 0); 300 } 301 302 if (intr & WL1251_ACX_INTR_EVENT_B) { 303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); 304 wl1251_event_handle(wl, 1); 305 } 306 307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE) 308 wl1251_debug(DEBUG_IRQ, 309 "WL1251_ACX_INTR_INIT_COMPLETE"); 310 311 if (--ctr == 0) 312 break; 313 314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); 315 } while (intr); 316 317 out_sleep: 318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); 319 wl1251_ps_elp_sleep(wl); 320 321 out: 322 mutex_unlock(&wl->mutex); 323 } 324 325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, 326 u16 beacon_interval, u8 dtim_period) 327 { 328 int ret; 329 330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, 331 DEFAULT_HW_GEN_MODULATION_TYPE, 332 wl->tx_mgmt_frm_rate, 333 wl->tx_mgmt_frm_mod); 334 if (ret < 0) 335 goto out; 336 337 /* 338 * Join command applies filters, and if we are not associated, 339 * BSSID filter must be disabled for association to work. 340 */ 341 if (is_zero_ether_addr(wl->bssid)) 342 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 343 344 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, 345 dtim_period); 346 if (ret < 0) 347 goto out; 348 349 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); 350 if (ret < 0) 351 wl1251_warning("join timeout"); 352 353 out: 354 return ret; 355 } 356 357 static void wl1251_op_tx(struct ieee80211_hw *hw, 358 struct ieee80211_tx_control *control, 359 struct sk_buff *skb) 360 { 361 struct wl1251 *wl = hw->priv; 362 unsigned long flags; 363 364 skb_queue_tail(&wl->tx_queue, skb); 365 366 /* 367 * The chip specific setup must run before the first TX packet - 368 * before that, the tx_work will not be initialized! 369 */ 370 371 ieee80211_queue_work(wl->hw, &wl->tx_work); 372 373 /* 374 * The workqueue is slow to process the tx_queue and we need stop 375 * the queue here, otherwise the queue will get too long. 376 */ 377 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { 378 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); 379 380 spin_lock_irqsave(&wl->wl_lock, flags); 381 ieee80211_stop_queues(wl->hw); 382 wl->tx_queue_stopped = true; 383 spin_unlock_irqrestore(&wl->wl_lock, flags); 384 } 385 } 386 387 static int wl1251_op_start(struct ieee80211_hw *hw) 388 { 389 struct wl1251 *wl = hw->priv; 390 struct wiphy *wiphy = hw->wiphy; 391 int ret = 0; 392 393 wl1251_debug(DEBUG_MAC80211, "mac80211 start"); 394 395 mutex_lock(&wl->mutex); 396 397 if (wl->state != WL1251_STATE_OFF) { 398 wl1251_error("cannot start because not in off state: %d", 399 wl->state); 400 ret = -EBUSY; 401 goto out; 402 } 403 404 ret = wl1251_chip_wakeup(wl); 405 if (ret < 0) 406 goto out; 407 408 ret = wl1251_boot(wl); 409 if (ret < 0) 410 goto out; 411 412 ret = wl1251_hw_init(wl); 413 if (ret < 0) 414 goto out; 415 416 ret = wl1251_acx_station_id(wl); 417 if (ret < 0) 418 goto out; 419 420 wl->state = WL1251_STATE_ON; 421 422 wl1251_info("firmware booted (%s)", wl->fw_ver); 423 424 /* update hw/fw version info in wiphy struct */ 425 wiphy->hw_version = wl->chip_id; 426 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); 427 428 out: 429 if (ret < 0) 430 wl1251_power_off(wl); 431 432 mutex_unlock(&wl->mutex); 433 434 return ret; 435 } 436 437 static void wl1251_op_stop(struct ieee80211_hw *hw) 438 { 439 struct wl1251 *wl = hw->priv; 440 441 wl1251_info("down"); 442 443 wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); 444 445 mutex_lock(&wl->mutex); 446 447 WARN_ON(wl->state != WL1251_STATE_ON); 448 449 if (wl->scanning) { 450 ieee80211_scan_completed(wl->hw, true); 451 wl->scanning = false; 452 } 453 454 wl->state = WL1251_STATE_OFF; 455 456 wl1251_disable_interrupts(wl); 457 458 mutex_unlock(&wl->mutex); 459 460 cancel_work_sync(&wl->irq_work); 461 cancel_work_sync(&wl->tx_work); 462 cancel_delayed_work_sync(&wl->elp_work); 463 464 mutex_lock(&wl->mutex); 465 466 /* let's notify MAC80211 about the remaining pending TX frames */ 467 wl1251_tx_flush(wl); 468 wl1251_power_off(wl); 469 470 memset(wl->bssid, 0, ETH_ALEN); 471 wl->listen_int = 1; 472 wl->bss_type = MAX_BSS_TYPE; 473 474 wl->data_in_count = 0; 475 wl->rx_counter = 0; 476 wl->rx_handled = 0; 477 wl->rx_current_buffer = 0; 478 wl->rx_last_id = 0; 479 wl->next_tx_complete = 0; 480 wl->elp = false; 481 wl->station_mode = STATION_ACTIVE_MODE; 482 wl->tx_queue_stopped = false; 483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 484 wl->rssi_thold = 0; 485 wl->channel = WL1251_DEFAULT_CHANNEL; 486 487 wl1251_debugfs_reset(wl); 488 489 mutex_unlock(&wl->mutex); 490 } 491 492 static int wl1251_op_add_interface(struct ieee80211_hw *hw, 493 struct ieee80211_vif *vif) 494 { 495 struct wl1251 *wl = hw->priv; 496 int ret = 0; 497 498 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 499 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 500 501 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", 502 vif->type, vif->addr); 503 504 mutex_lock(&wl->mutex); 505 if (wl->vif) { 506 ret = -EBUSY; 507 goto out; 508 } 509 510 wl->vif = vif; 511 512 switch (vif->type) { 513 case NL80211_IFTYPE_STATION: 514 wl->bss_type = BSS_TYPE_STA_BSS; 515 break; 516 case NL80211_IFTYPE_ADHOC: 517 wl->bss_type = BSS_TYPE_IBSS; 518 break; 519 default: 520 ret = -EOPNOTSUPP; 521 goto out; 522 } 523 524 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) { 525 memcpy(wl->mac_addr, vif->addr, ETH_ALEN); 526 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 527 ret = wl1251_acx_station_id(wl); 528 if (ret < 0) 529 goto out; 530 } 531 532 out: 533 mutex_unlock(&wl->mutex); 534 return ret; 535 } 536 537 static void wl1251_op_remove_interface(struct ieee80211_hw *hw, 538 struct ieee80211_vif *vif) 539 { 540 struct wl1251 *wl = hw->priv; 541 542 mutex_lock(&wl->mutex); 543 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); 544 wl->vif = NULL; 545 mutex_unlock(&wl->mutex); 546 } 547 548 static int wl1251_build_qos_null_data(struct wl1251 *wl) 549 { 550 struct ieee80211_qos_hdr template; 551 552 memset(&template, 0, sizeof(template)); 553 554 memcpy(template.addr1, wl->bssid, ETH_ALEN); 555 memcpy(template.addr2, wl->mac_addr, ETH_ALEN); 556 memcpy(template.addr3, wl->bssid, ETH_ALEN); 557 558 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | 559 IEEE80211_STYPE_QOS_NULLFUNC | 560 IEEE80211_FCTL_TODS); 561 562 /* FIXME: not sure what priority to use here */ 563 template.qos_ctrl = cpu_to_le16(0); 564 565 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, 566 sizeof(template)); 567 } 568 569 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) 570 { 571 struct wl1251 *wl = hw->priv; 572 struct ieee80211_conf *conf = &hw->conf; 573 int channel, ret = 0; 574 575 channel = ieee80211_frequency_to_channel(conf->channel->center_freq); 576 577 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", 578 channel, 579 conf->flags & IEEE80211_CONF_PS ? "on" : "off", 580 conf->power_level); 581 582 mutex_lock(&wl->mutex); 583 584 ret = wl1251_ps_elp_wakeup(wl); 585 if (ret < 0) 586 goto out; 587 588 if (channel != wl->channel) { 589 wl->channel = channel; 590 591 ret = wl1251_join(wl, wl->bss_type, wl->channel, 592 wl->beacon_int, wl->dtim_period); 593 if (ret < 0) 594 goto out_sleep; 595 } 596 597 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { 598 wl1251_debug(DEBUG_PSM, "psm enabled"); 599 600 wl->psm_requested = true; 601 602 wl->dtim_period = conf->ps_dtim_period; 603 604 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, 605 wl->dtim_period); 606 607 /* 608 * mac80211 enables PSM only if we're already associated. 609 */ 610 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); 611 if (ret < 0) 612 goto out_sleep; 613 } else if (!(conf->flags & IEEE80211_CONF_PS) && 614 wl->psm_requested) { 615 wl1251_debug(DEBUG_PSM, "psm disabled"); 616 617 wl->psm_requested = false; 618 619 if (wl->station_mode != STATION_ACTIVE_MODE) { 620 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 621 if (ret < 0) 622 goto out_sleep; 623 } 624 } 625 626 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 627 if (conf->flags & IEEE80211_CONF_IDLE) { 628 ret = wl1251_ps_set_mode(wl, STATION_IDLE); 629 if (ret < 0) 630 goto out_sleep; 631 } else { 632 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); 633 if (ret < 0) 634 goto out_sleep; 635 ret = wl1251_join(wl, wl->bss_type, wl->channel, 636 wl->beacon_int, wl->dtim_period); 637 if (ret < 0) 638 goto out_sleep; 639 } 640 } 641 642 if (conf->power_level != wl->power_level) { 643 ret = wl1251_acx_tx_power(wl, conf->power_level); 644 if (ret < 0) 645 goto out_sleep; 646 647 wl->power_level = conf->power_level; 648 } 649 650 out_sleep: 651 wl1251_ps_elp_sleep(wl); 652 653 out: 654 mutex_unlock(&wl->mutex); 655 656 return ret; 657 } 658 659 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ 660 FIF_ALLMULTI | \ 661 FIF_FCSFAIL | \ 662 FIF_BCN_PRBRESP_PROMISC | \ 663 FIF_CONTROL | \ 664 FIF_OTHER_BSS | \ 665 FIF_PROBE_REQ) 666 667 static void wl1251_op_configure_filter(struct ieee80211_hw *hw, 668 unsigned int changed, 669 unsigned int *total,u64 multicast) 670 { 671 struct wl1251 *wl = hw->priv; 672 int ret; 673 674 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); 675 676 *total &= WL1251_SUPPORTED_FILTERS; 677 changed &= WL1251_SUPPORTED_FILTERS; 678 679 if (changed == 0) 680 /* no filters which we support changed */ 681 return; 682 683 mutex_lock(&wl->mutex); 684 685 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 686 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 687 688 if (*total & FIF_PROMISC_IN_BSS) { 689 wl->rx_config |= CFG_BSSID_FILTER_EN; 690 wl->rx_config |= CFG_RX_ALL_GOOD; 691 } 692 if (*total & FIF_ALLMULTI) 693 /* 694 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive 695 * all multicast frames 696 */ 697 wl->rx_config &= ~CFG_MC_FILTER_EN; 698 if (*total & FIF_FCSFAIL) 699 wl->rx_filter |= CFG_RX_FCS_ERROR; 700 if (*total & FIF_BCN_PRBRESP_PROMISC) { 701 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 702 wl->rx_config &= ~CFG_SSID_FILTER_EN; 703 } 704 if (*total & FIF_CONTROL) 705 wl->rx_filter |= CFG_RX_CTL_EN; 706 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid)) 707 wl->rx_config &= ~CFG_BSSID_FILTER_EN; 708 if (*total & FIF_PROBE_REQ) 709 wl->rx_filter |= CFG_RX_PREQ_EN; 710 711 if (wl->state == WL1251_STATE_OFF) 712 goto out; 713 714 ret = wl1251_ps_elp_wakeup(wl); 715 if (ret < 0) 716 goto out; 717 718 /* send filters to firmware */ 719 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter); 720 721 wl1251_ps_elp_sleep(wl); 722 723 out: 724 mutex_unlock(&wl->mutex); 725 } 726 727 /* HW encryption */ 728 static int wl1251_set_key_type(struct wl1251 *wl, 729 struct wl1251_cmd_set_keys *key, 730 enum set_key_cmd cmd, 731 struct ieee80211_key_conf *mac80211_key, 732 const u8 *addr) 733 { 734 switch (mac80211_key->cipher) { 735 case WLAN_CIPHER_SUITE_WEP40: 736 case WLAN_CIPHER_SUITE_WEP104: 737 if (is_broadcast_ether_addr(addr)) 738 key->key_type = KEY_WEP_DEFAULT; 739 else 740 key->key_type = KEY_WEP_ADDR; 741 742 mac80211_key->hw_key_idx = mac80211_key->keyidx; 743 break; 744 case WLAN_CIPHER_SUITE_TKIP: 745 if (is_broadcast_ether_addr(addr)) 746 key->key_type = KEY_TKIP_MIC_GROUP; 747 else 748 key->key_type = KEY_TKIP_MIC_PAIRWISE; 749 750 mac80211_key->hw_key_idx = mac80211_key->keyidx; 751 break; 752 case WLAN_CIPHER_SUITE_CCMP: 753 if (is_broadcast_ether_addr(addr)) 754 key->key_type = KEY_AES_GROUP; 755 else 756 key->key_type = KEY_AES_PAIRWISE; 757 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 758 break; 759 default: 760 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); 761 return -EOPNOTSUPP; 762 } 763 764 return 0; 765 } 766 767 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 768 struct ieee80211_vif *vif, 769 struct ieee80211_sta *sta, 770 struct ieee80211_key_conf *key) 771 { 772 struct wl1251 *wl = hw->priv; 773 struct wl1251_cmd_set_keys *wl_cmd; 774 const u8 *addr; 775 int ret; 776 777 static const u8 bcast_addr[ETH_ALEN] = 778 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 779 780 wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); 781 782 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); 783 if (!wl_cmd) { 784 ret = -ENOMEM; 785 goto out; 786 } 787 788 addr = sta ? sta->addr : bcast_addr; 789 790 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); 791 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); 792 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", 793 key->cipher, key->keyidx, key->keylen, key->flags); 794 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); 795 796 if (is_zero_ether_addr(addr)) { 797 /* We dont support TX only encryption */ 798 ret = -EOPNOTSUPP; 799 goto out; 800 } 801 802 mutex_lock(&wl->mutex); 803 804 ret = wl1251_ps_elp_wakeup(wl); 805 if (ret < 0) 806 goto out_unlock; 807 808 switch (cmd) { 809 case SET_KEY: 810 wl_cmd->key_action = KEY_ADD_OR_REPLACE; 811 break; 812 case DISABLE_KEY: 813 wl_cmd->key_action = KEY_REMOVE; 814 break; 815 default: 816 wl1251_error("Unsupported key cmd 0x%x", cmd); 817 break; 818 } 819 820 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); 821 if (ret < 0) { 822 wl1251_error("Set KEY type failed"); 823 goto out_sleep; 824 } 825 826 if (wl_cmd->key_type != KEY_WEP_DEFAULT) 827 memcpy(wl_cmd->addr, addr, ETH_ALEN); 828 829 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || 830 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { 831 /* 832 * We get the key in the following form: 833 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) 834 * but the target is expecting: 835 * TKIP - RX MIC - TX MIC 836 */ 837 memcpy(wl_cmd->key, key->key, 16); 838 memcpy(wl_cmd->key + 16, key->key + 24, 8); 839 memcpy(wl_cmd->key + 24, key->key + 16, 8); 840 841 } else { 842 memcpy(wl_cmd->key, key->key, key->keylen); 843 } 844 wl_cmd->key_size = key->keylen; 845 846 wl_cmd->id = key->keyidx; 847 wl_cmd->ssid_profile = 0; 848 849 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); 850 851 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); 852 if (ret < 0) { 853 wl1251_warning("could not set keys"); 854 goto out_sleep; 855 } 856 857 out_sleep: 858 wl1251_ps_elp_sleep(wl); 859 860 out_unlock: 861 mutex_unlock(&wl->mutex); 862 863 out: 864 kfree(wl_cmd); 865 866 return ret; 867 } 868 869 static int wl1251_op_hw_scan(struct ieee80211_hw *hw, 870 struct ieee80211_vif *vif, 871 struct cfg80211_scan_request *req) 872 { 873 struct wl1251 *wl = hw->priv; 874 struct sk_buff *skb; 875 size_t ssid_len = 0; 876 u8 *ssid = NULL; 877 int ret; 878 879 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); 880 881 if (req->n_ssids) { 882 ssid = req->ssids[0].ssid; 883 ssid_len = req->ssids[0].ssid_len; 884 } 885 886 mutex_lock(&wl->mutex); 887 888 if (wl->scanning) { 889 wl1251_debug(DEBUG_SCAN, "scan already in progress"); 890 ret = -EINVAL; 891 goto out; 892 } 893 894 ret = wl1251_ps_elp_wakeup(wl); 895 if (ret < 0) 896 goto out; 897 898 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, 899 req->ie_len); 900 if (!skb) { 901 ret = -ENOMEM; 902 goto out; 903 } 904 if (req->ie_len) 905 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len); 906 907 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, 908 skb->len); 909 dev_kfree_skb(skb); 910 if (ret < 0) 911 goto out_sleep; 912 913 ret = wl1251_cmd_trigger_scan_to(wl, 0); 914 if (ret < 0) 915 goto out_sleep; 916 917 wl->scanning = true; 918 919 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, 920 req->n_channels, WL1251_SCAN_NUM_PROBES); 921 if (ret < 0) { 922 wl->scanning = false; 923 goto out_sleep; 924 } 925 926 out_sleep: 927 wl1251_ps_elp_sleep(wl); 928 929 out: 930 mutex_unlock(&wl->mutex); 931 932 return ret; 933 } 934 935 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 936 { 937 struct wl1251 *wl = hw->priv; 938 int ret; 939 940 mutex_lock(&wl->mutex); 941 942 ret = wl1251_ps_elp_wakeup(wl); 943 if (ret < 0) 944 goto out; 945 946 ret = wl1251_acx_rts_threshold(wl, (u16) value); 947 if (ret < 0) 948 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); 949 950 wl1251_ps_elp_sleep(wl); 951 952 out: 953 mutex_unlock(&wl->mutex); 954 955 return ret; 956 } 957 958 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, 959 struct ieee80211_vif *vif, 960 struct ieee80211_bss_conf *bss_conf, 961 u32 changed) 962 { 963 struct wl1251 *wl = hw->priv; 964 struct sk_buff *beacon, *skb; 965 int ret; 966 967 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); 968 969 mutex_lock(&wl->mutex); 970 971 ret = wl1251_ps_elp_wakeup(wl); 972 if (ret < 0) 973 goto out; 974 975 if (changed & BSS_CHANGED_CQM) { 976 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, 977 WL1251_DEFAULT_LOW_RSSI_WEIGHT, 978 WL1251_DEFAULT_LOW_RSSI_DEPTH, 979 WL1251_ACX_LOW_RSSI_TYPE_EDGE); 980 if (ret < 0) 981 goto out; 982 wl->rssi_thold = bss_conf->cqm_rssi_thold; 983 } 984 985 if (changed & BSS_CHANGED_BSSID) { 986 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); 987 988 skb = ieee80211_nullfunc_get(wl->hw, wl->vif); 989 if (!skb) 990 goto out_sleep; 991 992 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, 993 skb->data, skb->len); 994 dev_kfree_skb(skb); 995 if (ret < 0) 996 goto out_sleep; 997 998 ret = wl1251_build_qos_null_data(wl); 999 if (ret < 0) 1000 goto out; 1001 1002 if (wl->bss_type != BSS_TYPE_IBSS) { 1003 ret = wl1251_join(wl, wl->bss_type, wl->channel, 1004 wl->beacon_int, wl->dtim_period); 1005 if (ret < 0) 1006 goto out_sleep; 1007 } 1008 } 1009 1010 if (changed & BSS_CHANGED_ASSOC) { 1011 if (bss_conf->assoc) { 1012 wl->beacon_int = bss_conf->beacon_int; 1013 1014 skb = ieee80211_pspoll_get(wl->hw, wl->vif); 1015 if (!skb) 1016 goto out_sleep; 1017 1018 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, 1019 skb->data, 1020 skb->len); 1021 dev_kfree_skb(skb); 1022 if (ret < 0) 1023 goto out_sleep; 1024 1025 ret = wl1251_acx_aid(wl, bss_conf->aid); 1026 if (ret < 0) 1027 goto out_sleep; 1028 } else { 1029 /* use defaults when not associated */ 1030 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1031 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1032 } 1033 } 1034 if (changed & BSS_CHANGED_ERP_SLOT) { 1035 if (bss_conf->use_short_slot) 1036 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); 1037 else 1038 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); 1039 if (ret < 0) { 1040 wl1251_warning("Set slot time failed %d", ret); 1041 goto out_sleep; 1042 } 1043 } 1044 1045 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 1046 if (bss_conf->use_short_preamble) 1047 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); 1048 else 1049 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); 1050 } 1051 1052 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 1053 if (bss_conf->use_cts_prot) 1054 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); 1055 else 1056 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); 1057 if (ret < 0) { 1058 wl1251_warning("Set ctsprotect failed %d", ret); 1059 goto out_sleep; 1060 } 1061 } 1062 1063 if (changed & BSS_CHANGED_BEACON) { 1064 beacon = ieee80211_beacon_get(hw, vif); 1065 if (!beacon) 1066 goto out_sleep; 1067 1068 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, 1069 beacon->len); 1070 1071 if (ret < 0) { 1072 dev_kfree_skb(beacon); 1073 goto out_sleep; 1074 } 1075 1076 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, 1077 beacon->len); 1078 1079 dev_kfree_skb(beacon); 1080 1081 if (ret < 0) 1082 goto out_sleep; 1083 1084 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, 1085 wl->channel, wl->dtim_period); 1086 1087 if (ret < 0) 1088 goto out_sleep; 1089 } 1090 1091 out_sleep: 1092 wl1251_ps_elp_sleep(wl); 1093 1094 out: 1095 mutex_unlock(&wl->mutex); 1096 } 1097 1098 1099 /* can't be const, mac80211 writes to this */ 1100 static struct ieee80211_rate wl1251_rates[] = { 1101 { .bitrate = 10, 1102 .hw_value = 0x1, 1103 .hw_value_short = 0x1, }, 1104 { .bitrate = 20, 1105 .hw_value = 0x2, 1106 .hw_value_short = 0x2, 1107 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1108 { .bitrate = 55, 1109 .hw_value = 0x4, 1110 .hw_value_short = 0x4, 1111 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1112 { .bitrate = 110, 1113 .hw_value = 0x20, 1114 .hw_value_short = 0x20, 1115 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 1116 { .bitrate = 60, 1117 .hw_value = 0x8, 1118 .hw_value_short = 0x8, }, 1119 { .bitrate = 90, 1120 .hw_value = 0x10, 1121 .hw_value_short = 0x10, }, 1122 { .bitrate = 120, 1123 .hw_value = 0x40, 1124 .hw_value_short = 0x40, }, 1125 { .bitrate = 180, 1126 .hw_value = 0x80, 1127 .hw_value_short = 0x80, }, 1128 { .bitrate = 240, 1129 .hw_value = 0x200, 1130 .hw_value_short = 0x200, }, 1131 { .bitrate = 360, 1132 .hw_value = 0x400, 1133 .hw_value_short = 0x400, }, 1134 { .bitrate = 480, 1135 .hw_value = 0x800, 1136 .hw_value_short = 0x800, }, 1137 { .bitrate = 540, 1138 .hw_value = 0x1000, 1139 .hw_value_short = 0x1000, }, 1140 }; 1141 1142 /* can't be const, mac80211 writes to this */ 1143 static struct ieee80211_channel wl1251_channels[] = { 1144 { .hw_value = 1, .center_freq = 2412}, 1145 { .hw_value = 2, .center_freq = 2417}, 1146 { .hw_value = 3, .center_freq = 2422}, 1147 { .hw_value = 4, .center_freq = 2427}, 1148 { .hw_value = 5, .center_freq = 2432}, 1149 { .hw_value = 6, .center_freq = 2437}, 1150 { .hw_value = 7, .center_freq = 2442}, 1151 { .hw_value = 8, .center_freq = 2447}, 1152 { .hw_value = 9, .center_freq = 2452}, 1153 { .hw_value = 10, .center_freq = 2457}, 1154 { .hw_value = 11, .center_freq = 2462}, 1155 { .hw_value = 12, .center_freq = 2467}, 1156 { .hw_value = 13, .center_freq = 2472}, 1157 }; 1158 1159 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, 1160 struct ieee80211_vif *vif, u16 queue, 1161 const struct ieee80211_tx_queue_params *params) 1162 { 1163 enum wl1251_acx_ps_scheme ps_scheme; 1164 struct wl1251 *wl = hw->priv; 1165 int ret; 1166 1167 mutex_lock(&wl->mutex); 1168 1169 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); 1170 1171 ret = wl1251_ps_elp_wakeup(wl); 1172 if (ret < 0) 1173 goto out; 1174 1175 /* mac80211 uses units of 32 usec */ 1176 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), 1177 params->cw_min, params->cw_max, 1178 params->aifs, params->txop * 32); 1179 if (ret < 0) 1180 goto out_sleep; 1181 1182 if (params->uapsd) 1183 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; 1184 else 1185 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; 1186 1187 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), 1188 CHANNEL_TYPE_EDCF, 1189 wl1251_tx_get_queue(queue), ps_scheme, 1190 WL1251_ACX_ACK_POLICY_LEGACY); 1191 if (ret < 0) 1192 goto out_sleep; 1193 1194 out_sleep: 1195 wl1251_ps_elp_sleep(wl); 1196 1197 out: 1198 mutex_unlock(&wl->mutex); 1199 1200 return ret; 1201 } 1202 1203 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, 1204 struct survey_info *survey) 1205 { 1206 struct wl1251 *wl = hw->priv; 1207 struct ieee80211_conf *conf = &hw->conf; 1208 1209 if (idx != 0) 1210 return -ENOENT; 1211 1212 survey->channel = conf->channel; 1213 survey->filled = SURVEY_INFO_NOISE_DBM; 1214 survey->noise = wl->noise; 1215 1216 return 0; 1217 } 1218 1219 /* can't be const, mac80211 writes to this */ 1220 static struct ieee80211_supported_band wl1251_band_2ghz = { 1221 .channels = wl1251_channels, 1222 .n_channels = ARRAY_SIZE(wl1251_channels), 1223 .bitrates = wl1251_rates, 1224 .n_bitrates = ARRAY_SIZE(wl1251_rates), 1225 }; 1226 1227 static const struct ieee80211_ops wl1251_ops = { 1228 .start = wl1251_op_start, 1229 .stop = wl1251_op_stop, 1230 .add_interface = wl1251_op_add_interface, 1231 .remove_interface = wl1251_op_remove_interface, 1232 .config = wl1251_op_config, 1233 .configure_filter = wl1251_op_configure_filter, 1234 .tx = wl1251_op_tx, 1235 .set_key = wl1251_op_set_key, 1236 .hw_scan = wl1251_op_hw_scan, 1237 .bss_info_changed = wl1251_op_bss_info_changed, 1238 .set_rts_threshold = wl1251_op_set_rts_threshold, 1239 .conf_tx = wl1251_op_conf_tx, 1240 .get_survey = wl1251_op_get_survey, 1241 }; 1242 1243 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) 1244 { 1245 unsigned long timeout; 1246 1247 wl1251_reg_write32(wl, EE_ADDR, offset); 1248 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); 1249 1250 /* EE_CTL_READ clears when data is ready */ 1251 timeout = jiffies + msecs_to_jiffies(100); 1252 while (1) { 1253 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) 1254 break; 1255 1256 if (time_after(jiffies, timeout)) 1257 return -ETIMEDOUT; 1258 1259 msleep(1); 1260 } 1261 1262 *data = wl1251_reg_read32(wl, EE_DATA); 1263 return 0; 1264 } 1265 1266 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, 1267 u8 *data, size_t len) 1268 { 1269 size_t i; 1270 int ret; 1271 1272 wl1251_reg_write32(wl, EE_START, 0); 1273 1274 for (i = 0; i < len; i++) { 1275 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); 1276 if (ret < 0) 1277 return ret; 1278 } 1279 1280 return 0; 1281 } 1282 1283 static int wl1251_read_eeprom_mac(struct wl1251 *wl) 1284 { 1285 u8 mac[ETH_ALEN]; 1286 int i, ret; 1287 1288 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); 1289 1290 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); 1291 if (ret < 0) { 1292 wl1251_warning("failed to read MAC address from EEPROM"); 1293 return ret; 1294 } 1295 1296 /* MAC is stored in reverse order */ 1297 for (i = 0; i < ETH_ALEN; i++) 1298 wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; 1299 1300 return 0; 1301 } 1302 1303 static int wl1251_register_hw(struct wl1251 *wl) 1304 { 1305 int ret; 1306 1307 if (wl->mac80211_registered) 1308 return 0; 1309 1310 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); 1311 1312 ret = ieee80211_register_hw(wl->hw); 1313 if (ret < 0) { 1314 wl1251_error("unable to register mac80211 hw: %d", ret); 1315 return ret; 1316 } 1317 1318 wl->mac80211_registered = true; 1319 1320 wl1251_notice("loaded"); 1321 1322 return 0; 1323 } 1324 1325 int wl1251_init_ieee80211(struct wl1251 *wl) 1326 { 1327 int ret; 1328 1329 /* The tx descriptor buffer and the TKIP space */ 1330 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) 1331 + WL1251_TKIP_IV_SPACE; 1332 1333 /* unit us */ 1334 /* FIXME: find a proper value */ 1335 wl->hw->channel_change_time = 10000; 1336 1337 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | 1338 IEEE80211_HW_SUPPORTS_PS | 1339 IEEE80211_HW_SUPPORTS_UAPSD; 1340 1341 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 1342 BIT(NL80211_IFTYPE_ADHOC); 1343 wl->hw->wiphy->max_scan_ssids = 1; 1344 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; 1345 1346 wl->hw->queues = 4; 1347 1348 if (wl->use_eeprom) 1349 wl1251_read_eeprom_mac(wl); 1350 1351 ret = wl1251_register_hw(wl); 1352 if (ret) 1353 goto out; 1354 1355 wl1251_debugfs_init(wl); 1356 wl1251_notice("initialized"); 1357 1358 ret = 0; 1359 1360 out: 1361 return ret; 1362 } 1363 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); 1364 1365 struct ieee80211_hw *wl1251_alloc_hw(void) 1366 { 1367 struct ieee80211_hw *hw; 1368 struct wl1251 *wl; 1369 int i; 1370 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; 1371 1372 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); 1373 if (!hw) { 1374 wl1251_error("could not alloc ieee80211_hw"); 1375 return ERR_PTR(-ENOMEM); 1376 } 1377 1378 wl = hw->priv; 1379 memset(wl, 0, sizeof(*wl)); 1380 1381 wl->hw = hw; 1382 1383 wl->data_in_count = 0; 1384 1385 skb_queue_head_init(&wl->tx_queue); 1386 1387 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); 1388 wl->channel = WL1251_DEFAULT_CHANNEL; 1389 wl->scanning = false; 1390 wl->default_key = 0; 1391 wl->listen_int = 1; 1392 wl->rx_counter = 0; 1393 wl->rx_handled = 0; 1394 wl->rx_current_buffer = 0; 1395 wl->rx_last_id = 0; 1396 wl->rx_config = WL1251_DEFAULT_RX_CONFIG; 1397 wl->rx_filter = WL1251_DEFAULT_RX_FILTER; 1398 wl->elp = false; 1399 wl->station_mode = STATION_ACTIVE_MODE; 1400 wl->psm_requested = false; 1401 wl->tx_queue_stopped = false; 1402 wl->power_level = WL1251_DEFAULT_POWER_LEVEL; 1403 wl->rssi_thold = 0; 1404 wl->beacon_int = WL1251_DEFAULT_BEACON_INT; 1405 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; 1406 wl->vif = NULL; 1407 1408 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) 1409 wl->tx_frames[i] = NULL; 1410 1411 wl->next_tx_complete = 0; 1412 1413 INIT_WORK(&wl->irq_work, wl1251_irq_work); 1414 INIT_WORK(&wl->tx_work, wl1251_tx_work); 1415 1416 /* 1417 * In case our MAC address is not correctly set, 1418 * we use a random but Nokia MAC. 1419 */ 1420 memcpy(wl->mac_addr, nokia_oui, 3); 1421 get_random_bytes(wl->mac_addr + 3, 3); 1422 1423 wl->state = WL1251_STATE_OFF; 1424 mutex_init(&wl->mutex); 1425 1426 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; 1427 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; 1428 1429 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); 1430 if (!wl->rx_descriptor) { 1431 wl1251_error("could not allocate memory for rx descriptor"); 1432 ieee80211_free_hw(hw); 1433 return ERR_PTR(-ENOMEM); 1434 } 1435 1436 return hw; 1437 } 1438 EXPORT_SYMBOL_GPL(wl1251_alloc_hw); 1439 1440 int wl1251_free_hw(struct wl1251 *wl) 1441 { 1442 ieee80211_unregister_hw(wl->hw); 1443 1444 wl1251_debugfs_exit(wl); 1445 1446 kfree(wl->target_mem_map); 1447 kfree(wl->data_path); 1448 vfree(wl->fw); 1449 wl->fw = NULL; 1450 kfree(wl->nvs); 1451 wl->nvs = NULL; 1452 1453 kfree(wl->rx_descriptor); 1454 wl->rx_descriptor = NULL; 1455 1456 ieee80211_free_hw(wl->hw); 1457 1458 return 0; 1459 } 1460 EXPORT_SYMBOL_GPL(wl1251_free_hw); 1461 1462 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); 1463 MODULE_LICENSE("GPL"); 1464 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>"); 1465 MODULE_FIRMWARE(WL1251_FW_NAME); 1466